Intermolecular Hydrophosphination of Alkynes and Related Carbon−Carbon Multiple Bonds Catalyzed by Organoytterbiums
作者:Ken Takaki、Go Koshoji、Kimihiro Komeyama、Mitsuhiro Takeda、Tetsuya Shishido、Akira Kitani、Katsuomi Takehira
DOI:10.1021/jo030163g
日期:2003.8.1
Yb[bond]imine complex, [Yb(eta(2)-Ph(2)CNPh)(hmpa)(3)], to give alkenylphosphines and phosphine oxides after oxidative workup in good yields under mild conditions. This reaction is also applicable to various carbon[bond]carbon multiple bonds such as conjugated diynes and dienes, allenes, and styrene derivatives. Regio- and stereoselectivity and the scope and limitation of the present reaction clearly
乙炔亚胺络合物[Yb(eta(2)-Ph(2)CNPh)(hmpa)(3)]催化炔烃与二苯膦的分子间氢磷酸化反应,得到链烯基膦和膦氧化物,经过良好的氧化处理在温和条件下的产量。该反应也适用于各种碳-碳多键,例如共轭二炔和二烯,丙二烯和苯乙烯衍生物。本反应的区域和立体选择性以及范围和局限性明显不同于相应的自由基反应。取而代之的是,该反应通过将炔烃插入Yb [PPh](2)物种而发生,然后进行质子化。实际上,由亚胺配合物和膦获得了Yb [键]磷酸配合物[Yb(PPh(2))(2)(hmpa)(3)],其对于氢磷酸化表现出相似的催化剂活性。